US3374154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroforming and electrodeposition of stress-free nickel from the sulfamate bath
Assignee: Huntington Alloys Corp
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Filing: 1965-07-12
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Granted: 1968-03-19
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Hugh L Mccutchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:09
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE PROCESS FOR ELECTRODEPOSITING NICKEL HAVING A CONTROLLED STRESS LEVEL WHICH COMPRISES ESTABLISHING AN AQUEOUS ACID SULFAMATE BATH HAVING A PH OF ABOUT 3 TO ABOUT 5 AND CONTAINING ABOUT 55 TO ABOUT 110 GRAMS PER LITER OF NICKEL, UP TO ABOUT 90 GRAMS PER LITER OF SULFATE ION, UP TO ABOUT 25 GRAMS PER LITER OF CHLORIDE ION, A BUFFERING AMOUNT OF BORIC ACID AND A TEMPERATURE OF ABOUT 100*F. TO ABOUT 170*F. AND PASSING A PLATING CURRENT THROUGH SAID BATH AT A CATHODE CURRENT DENSITY UP TO ABOUT 300 AMPERES PER SQUARE FOOT FROM AN ACTIVE NICKEL ANODE TO A CATHODE IMMERSED THEREIN WHILE SUBJECTING SAID BATH TO ANODIC OXIDATION BY SUPPLYING CURRENT IN THE AMOUNT OF ABOUT 0.25% TO ABOUT 4% OF THE PLATING CURRENT TO AN INSOLUBLE ANODE IMMERSED IN SAID BATH TO PRODUCE A NICKEL DEPOSIT HAVING A CONTROLLED INTERNAL STRESS LEVEL OVER A LONG PERIOD OF BATH OPERATION.
Claim 2
Dependent Claim
154 words
THE PROCESS FOR ELECTRODEPOSITING NICKEL HAVING A CONTROLLED STRESS LEVEL WHICH COMPRISES ESTABLISHING AN AQUEOUS ACID SULFAMATE BATH HAVING A PH OF ABOUT 3 TO ABOUT 5 AND CONTAINING ABOUT 55 TO ABOUT 110 GRAMS PER LITER OF NICKEL, UP TO ABOUT 90 GRAMS PER LITER OF SULFATE ION, UP TO ABOUT 25 GRAMS PER LITER OF CHLORIDE ION, A BUFFERING AMOUNT OF BORIC ACID AND A TEMPERATURE OF ABOUT 100*F. TO ABOUT 170*F. AND PASSING A PLATING CURRENT THROUGH SAID BATH AT A CATHODE CURRENT DENSITY UP TO ABOUT 300 AMPERES PER SQUARE FOOT FROM AN ACTIVE NICKEL ANODE TO A CATHODE IMMERSED THEREIN WHILE SUBJECTING SAID BATH TO ANODIC OXIDATION BY SUPPLYING CURRENT IN THE AMOUNT OF ABOUT 0.25% TO ABOUT 4% OF THE PLATING CURRENT TO AN INSOLUBLE ANODE IMMERSED IN SAID BATH TO PRODUCE A NICKEL DEPOSIT HAVING A CONTROLLED INTERNAL STRESS LEVEL OVER A LONG PERIOD OF BATH OPERATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |